Rotary cutter



March 27, 1928;

A. ZIMNIEWICZ Filed Dec. 15. 1924 ROTARY CUTTER 2 Sheets-Sheet 1 ATTORNEMarch 27, 192s.

A. ZIMNIEWICZ ROTARY CUTTER Filed Deo. 15,v 1924 2 Sheets-Sheet 2INVENTO'R vATTORNEY cal embodiment of my invention wherein V the partsare combined and arranged ac-` Patented Mar. 27, 1928.

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r.aiv'rrrornz' ZIMNIEWICZ, or NEW Yoan, n. riassrsnon, BY MEsNEyAs[sienMnn'rs,v'ro

MIEHLE PRINTING PRESS & MANUFACTURIEGICOMPANY, or CHICAGO, ILLINOIS, A.

CORPORATION OF- ILLINOIS- ROTARY CUTTEB.`

v Application filed December 15,1924. Serial 1\.T"o. 756,110.

as an attachment forprinting presses or folding machines, forcuttingorslittingav folded sheet or web. of paper as vit passes through themachine or press.`

The primary object of the invention is the provision of a rotary cutter.ofthisl type for use in the manufacture of books, magarinesv and variousother articles' which will insure a clean and uniform out.` 'I`ov thisend the invention consists inV certain: novel fea;-A turesofconstruction. andl combinations and arrangementsV of parts as. willhereinafter be more fullypointed 'out and claimed.. -v In theaccompanying drawings. I ha-ve illustrated one complete example of thephysicording to the best mode Iv have thus `far devised for thepractical application of the vprinciples of lmy invention.l While Ishall refer tothe machine of my invention as a ,paper cutter, it will be'understood that the invention is oapable'of use in various other ways,and therefore I ldo not limit myself tothe physical embodiment of theinvention as an attachment for folding or, printing machines.` n

Figure 1` is a plan view showing so much of the machine as is necessaryforanunder` standing of 4its construction and operation, therotarycut-ter being illustrated in operative relation'to the nipping or feedrolls forv located below thel plane of lthe feed roll the paper web orsheet.

the latter view, parts being Shown in .dotted lines for convenience ofillustration.

Figure 4 is a detail sectional view at line 4-4 of Figure 2, showing therelation of the cutter and. feed rolfls to the leads of the vpaper web.1

Figure 5 is; an .enlarged sectional detail view. of the cutterandcutteihead and conneetions.

It will be understood that the'V device 'of the invention is designed toslit or out the folded, or other edge, of av paper sheet or ew ofthepartsY webyand in the drawings the maehineis adapted to cut the leftedge of the paper in Figures. 1 and 2,- the leadsof the paper ,beingAindicated in Figure 4 bythe dotted lines with}-ar1.ows. f i i In the;drawings I have indicated asl-'ia part of the frame of aprinting orfolding inachineftogether with a4 pair offroller shafts 2'and 3 havingthereon the usual or standard form yof* nipping or .feed rollsA 4 and4arranged at suitableintervals and in the required. number along thelength of the shafts.` Theoperating shaft 2 is shown as journaled inbearings in the frame 1", vand this shaft may be driven froma `suitablesource of'power for actuating both the feed rolls and the rotary cutter.

I 1 70 The short shaft Bin .the'nature of a'cou'n-A tershaft is disposedparallel with the operating shaft and inappro-Ximately ythe samehorizontalplane, in order `that thetwo sets of feed rolls'4 and 4 and 5and 5 will registerj as complementary feed Vdevices for the` paper sheetor web. The feed shaft 3 lis journaled inbearings 6 and 7 ywhich as hereYshown 'formparts of supporting yokesl 8 and 9. YThevshafts are shown asforeshortened for convenience of illustration and it will be understoodYthat between these end yokes .8

land -9 other intermediate yoles areused if-r required. 'Ihe 4yokes arefashioned with attaching hubslO, 10 whichr arey adjustable both,`longitudinally and circumferentially on a supporting bar 11 whichlatter `bar is t-he bar. by means of af set bolt 15. yThefree l end ofthe lever is equipped withja tension spring 16 which is anchoredto abracket 17 oni'the frame 1, and it will be apparent y that the springtends toirook the bar 11 `in"r its .bearings and swing the shaft 3Vaudits y rolls 5 toward. the shaft- 2 andthe com-j tions.

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The lead lines in Figure 4 and the arrows indicate the movement of thepaper sheet or web as it is drawn through the two sets of feed ornipping rolls. The complementary rolls 4 and 5 as best seen in Figure 1coact directly with the Vcutter blade 18 for slitting or cutting theedge of the paper sheet or web as it passes down between the two y setsof feed rolls.

The rotary cutter-blade 18 is an open center, circular plate or disk,having a sharpe ened or beveledl cutting edge,A and the blade isattached by screws 19 (dotted lines Figure V5) to a cutter head 20. Thiscircular cutter head 20 is fashioned with an integral or rigid, driven,gear wheel 21, and theseY members revolve upon a bearing bushing 22which encases a spindle 23. The spindle or pin 23 is provided with aretaining head 24 which engages both the bushing 22 and the cutter headto hold these elements in operative position.

One end of the pin 23 is reduced as indicated at 25 and by means of thisreduced portion the pin is supported in a boss 26 of a bracket 27,v andsecuring or clamping nuts Y28 on the threaded extremity of the reducedportion hold the cutter andcu'tter head in operative position'andwith'stability. The bracket 27 is fashioned with a hub 28 which latteris secured in adjusted position on the bar 11 byk means of a set bolt 29carried by the hub 28 and designed to impinge against the surface of thebar 11. It will be apparent thatkthe bracket carrying the cutter headand cutter may, through the hub 28 and set bolt 29, be adjusted bothlongitudi-v nally and circuniferentially of the bar 1l vto accuratelyposition the rotary cutter for the performance of its functions.

The rotary cutter is operated from the shaft 2 by means of a gear wheel30 in engagement with the gear wheel 21 of the cutter head, and thesegears are held in mesh Y by the tension of the spring 16 and lever 13,

as will be readily understood.

Adjacent to the roller4 of the shaft 2 a disk 31 is fixed to revolvewith the shaft, and between this disk and the roller 4 an annular space32 is formed into which the cutting edge of the rotary cutter projects,and by its coeactionwith the roll 4 the. cutter severs or slits the edgeof the paper sheet or web as the latter moves between the feed rolls. l

The rotary cutter in its relation to this cutting space or groove 32 maybe adjusted' j usting the lever 13 through its hub 14 andI bolt l5.

rl`he axial center of the cutter-it will be observed is located belowthe axial centers of the feed rolls and their shafts, and the cutting ofthe web takes place at approximately a point in alinement with the axialcenters of the two sets of feed rollers 0r rolls. f

` The cutting edge of the cutter which engages the paper web or sheetat'point 33 in Figure 4, thus co-acts with and severs or slits the webjust' at the point where the web is most rigidly Vgripped or heldbetween the nipping or feed rolls, and at this point the greateststability of the web is secured. Therefore'the cutter is permitted tomake a smooth and uniform cut of the web as it passes through the feedrolls.

- Various changes may be made in the exemplification of my invention asillustratedin the drawings, within the scopeof my appended claims,without departing from the spirit of my invention. y

Having thus fully described my invention, what I claim as'new and desireto secure by Letters Patent is: l

1. The combination with an operating shaft and feed rolls thereon, of asupport and adjustable yokes thereon, a shaftY journaled in said yokesand complementary vfeed rolls on said shaft, a rotary cutter,`a bracketfor said cutter having an adjustable hub on said support, and resilientmeans connected to said support for maintaining said feed rolls andcutter in operative position.

2. The combination withv a web feed mechanism of a. supporting bar, acutter bracket having a hub adjustable on said bar, a pin in said-yoke,a rotary cutter head and cutter on said' pin, means for operating saidcutter head and cutter, and resilient means acting on said supportingbar for maintaining the rotary cutter, in operative position.

v3. The combinationA with a web feed mechanism of asupporting bar, acutter bracket having a hub adjustable on said bar, a lever connectedwith said Vsupporting bar and an anchored tensionY spring connected withsaid lever, a pin in said bracket, a rotary cutter head and cutter onsaid pin, andvv ANTHONYl ZIMNIEVVICZ.

